Good news on the DMCA front
The Internet Archive (one of the coolest sites on the ‘net, if you haven’t checked it out) has recieved an exception to the DMCA for the purposes of archiving:
# Computer programs protected by dongles that prevent access due to malfunction or damage and which are obsolete.
# Computer programs and video games distributed in formats that have become obsolete and which require the original media or hardware as a condition of access.
So some of the early copy-protection schemes can indeed be legally bypassed in order to preserve them. It’s a small victory, but any victory is good with the DMCA.